YBN Ti-Nitride 11-speed Black Chain, 116 Links, 5.5mm Wide with One Reusable QRS Master Link DHA hardening for a service life up to 8000 km900 miles Ni-PFTE treated to reduce friction Ti-Nitride coating provides a durable and long lasting finish Chamfered inner and outer plates to smooth out and reduce shifting effort Includes one QRS reusable master link and one traditional chain pin